Conveyer belt



Jan. 5, 1932. v C. KING y 1,839,226

CONVEYER BELT Filed Nov. lO, 1950 I5*" 53 y'gs I s l @gm/@ mj@ @1,

c@ MQ@ Patented Jan. 5, 1.932

' assenze "narran STATES Partnrv ori-lcs VERNON' v(2. KING, 0FWORCESTER, MASSACHUSETTS, ASSIGNOR TO EDWABDC. CiBOWEBS AND CHARLES L.FELIINLAN, RECEIVES FOR WICKWBE SPENCER STEEL 0E NEW YORK, N. Y.,A.CORPORATION OF MASSACHUSETTS CONVEYEB. BELT V'applicationand Novemberio, 1930. serial 1ro. 494,584.

The present invention lrelates to flexible conveyer belts and embodies,more specifically, an improved belt formed of a plurality ofinterengaged elongated coils of wire extending transversely of the belt,the coils being mounted upon links which are pivotally secured togetherat their ends to aiiord complete exibility of the belt in bending ineither direction.

Where conveyer belts are utilized for conveying hot'bodies, as well asfor conveying bodies having appreciable weight, there is a tendency forthe belt to .elongate due to the tension and heat appliedthereto. Toaiord a belt having suicient'strength, as well as one which issuiiiciently resistant to elongating stresses, designs have beenprovi-,dedA

wherein transverse reinforcing members are incorporated to resisttheshortening of the belt transversely. Further forms have been providedlwhich incorporate means for preventing bodies from'falling from the beltand include upwardly 'extending projections at the sides thereof, these\projections usually being formed with the links.v

rlhe belt constructed in accordance withthe present invention ischaracterized by great strengthand iexibility, at the same time be.- ingsuciently light to permit the same to be readily handled. ln addition,the invention contemplates the provision of a belt wherein the elementsconstitute'a plurality of pairs of interengaged wire coils, the pairsbeing welded at their ends to successive links of the belt.

`The invention further contemplates the provision of a belt structure ofthe above Ycharacter wherein a belt is' provided which is equallyflexible `for curving in oppositedirections, thus facilitating themovement of vthe belt over a series of pulleys.

A further object of the invention is to provide a belt'of the abovecharacter wherein provision for a. degree of elongation is provided, thelinks being formed with slotted connections whereby relativle axialmovement thereof is provided.

Further objects, not specifically enumerated above, will be apparent asthe invention is .ing the links of the belt in .a'position assumedduring the passage of the belt overa pulley. Referring to the'abovedrawings, the belt .will be seen to be formed of a plurality of.

elongated wire coils a, secured' at their ends to a plurality of linksb. The are preferably formed with an offset portionb in order to permitthe ends thereof to overlap and thus enableI the links tobeinterchangeable. In the preferred form, the coils a are welded to thelinks but it is obvious that this speoic manner of securing the coilsmay be changed to suit'the individual requirements.

Lying between the coils a and passing through the convolutions thereof,are similarly formed wires c which are also secured, at their ends, tothe links b. Each pair of opposed links b` hassecured thereto, a coil aand acoil c, thus, in effect, forming a completel unit of such elements.y This unit,bel ing integral, turns bodily as the belt passes over apulley and thus facilitates exing of the belt about an axis transversethereto. The transverse axis of flexing, it will be seen from Figure 1,passes through aligned pins b3 on opposite links and also through thepoints of interengagement between the coils@ and c, in line with suchpins. By welding the ends of the coils a and c -at substantially themid-points of the opposed links, respectively, the coils will beinteradjacent link and thus arrds a connection' between such links whichprovides for relative movement therebetween. In this fashion, as thebelt passes over a pulle ,each

link is substantially free of other links to assume any desired positionupon the pulley without involving a substantial friction loss.

Although a. limited degree of elongation o the belt is provided for,when the pins engage the ends of the slots b2, the belt forms a solldconnection and positively prevents further elongation thereof. l

While the invention has been described with specic reference to theaccompanying drawings, it is not to be limited, save as defined in theappended claims.

I claim as my invention:

l. A conveyer beltcomprising a pluralityv of pairs of interengagingcoils, the coils of each pair diverging in opposite directions, aplurality of pairs of rigld links to `which are secured the Aends of therespective coils,

said links each having an elongated recess at oneend and a circularrecess at the other end, and pins extending through a circularl recessand an adjacent elongated recess of the respective links.

2. An articulated conveyer belt comprising a plurality of`units hingedfor pivotal movement with respect to each other about aXes transverse t0the belt, the units each comprising two elongated coils of wire rigidlyconnected to opposed links and the adjacent links each being formed witha circularl and an elongated recess at the respective ends thereof inthe aXes of the respective hinge connections between the units, and

. pins in the adjacent recesses to secure the links together.

This specification signed this 6th day of' November, A. D. 1930.

v VERNON C. KING.

